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Merz MP, Seal SV, Grova N, Mériaux S, Guebels P, Kanli G, Mommaerts E, Nicot N, Kaoma T, Keunen O, Nazarov PV, Turner JD. Early-life influenza A (H1N1) infection independently programs brain connectivity, HPA AXIS and tissue-specific gene expression profiles. Sci Rep 2024; 14:5898. [PMID: 38467724 PMCID: PMC10928197 DOI: 10.1038/s41598-024-56601-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 03/08/2024] [Indexed: 03/13/2024] Open
Abstract
Early-life adversity covers a range of physical, social and environmental stressors. Acute viral infections in early life are a major source of such adversity and have been associated with a broad spectrum of later-life effects outside the immune system or "off-target". These include an altered hypothalamus-pituitary-adrenal (HPA) axis and metabolic reactions. Here, we used a murine post-natal day 14 (PND 14) Influenza A (H1N1) infection model and applied a semi-holistic approach including phenotypic measurements, gene expression arrays and diffusion neuroimaging techniques to investigate HPA axis dysregulation, energy metabolism and brain connectivity. By PND 56 the H1N1 infection had been resolved, and there was no residual gene expression signature of immune cell infiltration into the liver, adrenal gland or brain tissues examined nor of immune-related signalling. A resolved early-life H1N1 infection had sex-specific effects. We observed retarded growth of males and altered pre-stress (baseline) blood glucose and corticosterone levels at PND42 after the infection was resolved. Cerebral MRI scans identified reduced connectivity in the cortex, midbrain and cerebellum that were accompanied by tissue-specific gene expression signatures. Gene set enrichment analysis confirmed that these were tissue-specific changes with few common pathways. Early-life infection independently affected each of the systems and this was independent of HPA axis or immune perturbations.
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Affiliation(s)
- Myriam P Merz
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, 2 Avenue de Université, L-4365, Esch-Sur-Alzette, Luxembourg
- Central Biobank Charité, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Snehaa V Seal
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, 2 Avenue de Université, L-4365, Esch-Sur-Alzette, Luxembourg
| | - Nathalie Grova
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Inserm U1256, NGERE, Nutrition-Génétique Et Exposition Aux Risques Environnementaux, Université de Lorraine, 54000, Nancy, France
| | - Sophie Mériaux
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
| | - Pauline Guebels
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
| | - Georgia Kanli
- In Vivo Imaging Platform, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Translational Radiomics, Department of Cancer Research, Luxembourg Institute of Health, 1526, Luxembourg, Luxembourg
| | - Elise Mommaerts
- LuxGen Genome Center, Laboratoire National de Santé, Luxembourg Institute of Health, 3555, Dudelange, Luxembourg
| | - Nathalie Nicot
- LuxGen Genome Center, Laboratoire National de Santé, Luxembourg Institute of Health, 3555, Dudelange, Luxembourg
| | - Tony Kaoma
- Bioinformatics Platform, Data Integration and Analysis Unit, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
| | - Olivier Keunen
- In Vivo Imaging Platform, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Translational Radiomics, Department of Cancer Research, Luxembourg Institute of Health, 1526, Luxembourg, Luxembourg
| | - Petr V Nazarov
- Bioinformatics Platform, Data Integration and Analysis Unit, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Multiomics Data Science Research Group, Department of Cancer Research, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
| | - Jonathan D Turner
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg.
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2
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Magalhães R, Barrière DA, Novais A, Marques F, Marques P, Cerqueira J, Sousa JC, Cachia A, Boumezbeur F, Bottlaender M, Jay TM, Mériaux S, Sousa N. The dynamics of stress: a longitudinal MRI study of rat brain structure and connectome. Mol Psychiatry 2018; 23:1998-2006. [PMID: 29203852 DOI: 10.1038/mp.2017.244] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/04/2017] [Accepted: 09/06/2017] [Indexed: 01/09/2023]
Abstract
Stress is a well-established trigger for a number of neuropsychiatric disorders, as it alters both structure and function of several brain regions and its networks. Herein, we conduct a longitudinal neuroimaging study to assess how a chronic unpredictable stress protocol impacts the structure of the rat brain and its functional connectome in both high and low responders to stress. Our results reveal the changes that stress triggers in the brain, with structural atrophy affecting key regions such as the prelimbic, cingulate, insular and retrosplenial, somatosensory, motor, auditory and perirhinal/entorhinal cortices, the hippocampus, the dorsomedial striatum, nucleus accumbens, the septum, the bed nucleus of the stria terminalis, the thalamus and several brain stem nuclei. These structural changes are associated with increasing functional connectivity within a network composed by these regions. Moreover, using a clustering based on endocrine and behavioural outcomes, animals were classified as high and low responders to stress. We reveal that susceptible animals (high responders) develop local atrophy of the ventral tegmental area and an increase in functional connectivity between this area and the thalamus, further spreading to other areas that link the cognitive system with the fight-or-flight system. Through a longitudinal approach we were able to establish two distinct patterns, with functional changes occurring during the exposure to stress, but with an inflection point after the first week of stress when more prominent changes were seen. Finally, our study revealed differences in functional connectivity in a brainstem-limbic network that distinguishes resistant and susceptible responders before any exposure to stress, providing the first potential imaging-based predictive biomarkers of an individual's resilience/vulnerability to stressful conditions.
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Affiliation(s)
- R Magalhães
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - D A Barrière
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France
| | - A Novais
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - F Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - P Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J Cerqueira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J C Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - A Cachia
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Laboratoire de Psychologie du développement et de l'Education de l'Enfant, CNRS UMR, Paris, France.,Institut Universitaire de France, Paris, France
| | - F Boumezbeur
- Neurospin, JOLIOT, CEA, Gif/Yvette, Paris, France
| | | | - T M Jay
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Faculté de Médecine Paris Descartes, Service Hospitalo-Universitaire, Centre Hospitalier Sainte-Anne, Paris, France
| | - S Mériaux
- Neurospin, JOLIOT, CEA, Gif/Yvette, Paris, France
| | - N Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal. .,ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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3
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Richard S, Boucher M, Saric A, Herbet A, Lalatonne Y, Petit PX, Mériaux S, Boquet D, Motte L. Optimization of pegylated iron oxide nanoplatforms for antibody coupling and bio-targeting. J Mater Chem B 2017; 5:2896-2907. [PMID: 32263983 DOI: 10.1039/c6tb03080g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PEGylation has been established as a valuable strategy to minimize nanoparticle clearance by the reticulo-endothelial system due to hydrophilicity and steric repulsion of PEG chains. In this study we functionalized superparamagnetic iron oxide nanoparticle surface with two PEG differing in their length (n = 23 and 44) and terminal functionality, COOH and CH3. By varying the ratio of the two different PEG, we optimized the molecular architecture of the nanoplatform to obtain maximum stability and low toxicity under physiological conditions. The best nanoplatform was evaluated as MRI contrast for mouse brain vascularization imaging at 7 T. The carboxylic acid functions of the nanoplatform were used to covalently bind an antibody, Ab. This antibody, labeled with a fluorophore, targets the ETA receptor, a G-protein-coupled receptor involved in the endothelin axis and overexpressed in various solid tumours, including ovarian, prostate, colon, breast, bladder and lung cancers. In vitro studies, performed by flow cytometry and magnetic quantification, showed the targeting efficiency of the Ab-nanoplatforms. Clearly, an imaging tracer for cancer diagnosis from a bimodal contrast agent (fluorescence and MRI) was thus obtained.
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Affiliation(s)
- S Richard
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057, CNRS and Université Paris Diderot, 75205 Paris Cedex 05, France
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4
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Magalhães R, Bourgin J, Boumezbeur F, Marques P, Bottlaender M, Poupon C, Djemaï B, Duchesnay E, Mériaux S, Sousa N, Jay TM, Cachia A. White matter changes in microstructure associated with a maladaptive response to stress in rats. Transl Psychiatry 2017; 7:e1009. [PMID: 28117841 PMCID: PMC5545740 DOI: 10.1038/tp.2016.283] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 11/30/2016] [Indexed: 12/29/2022] Open
Abstract
In today's society, every individual is subjected to stressful stimuli with different intensities and duration. This exposure can be a key trigger in several mental illnesses greatly affecting one's quality of life. Yet not all subjects respond equally to the same stimulus and some are able to better adapt to them delaying the onset of its negative consequences. The neural specificities of this adaptation can be essential to understand the true dynamics of stress as well as to design new approaches to reduce its consequences. In the current work, we employed ex vivo high field diffusion magnetic resonance imaging (MRI) to uncover the differences in white matter properties in the entire brain between Fisher 344 (F344) and Sprague-Dawley (SD) rats, known to present different responses to stress, and to examine the effects of a 2-week repeated inescapable stress paradigm. We applied a tract-based spatial statistics (TBSS) analysis approach to a total of 25 animals. After exposure to stress, SD rats were found to have lower values of corticosterone when compared with F344 rats. Overall, stress was found to lead to an overall increase in fractional anisotropy (FA), on top of a reduction in mean and radial diffusivity (MD and RD) in several white matter bundles of the brain. No effect of strain on the white matter diffusion properties was observed. The strain-by-stress interaction revealed an effect on SD rats in MD, RD and axial diffusivity (AD), with lower diffusion metric levels on stressed animals. These effects were localized on the left side of the brain on the external capsule, corpus callosum, deep cerebral white matter, anterior commissure, endopiriform nucleus, dorsal hippocampus and amygdala fibers. The results possibly reveal an adaptation of the SD strain to the stressful stimuli through synaptic and structural plasticity processes, possibly reflecting learning processes.
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Affiliation(s)
- R Magalhães
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal,ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J Bourgin
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France,Université Paris Descartes, Sorbonne Paris Cité, Paris, France,Faculté de Médecine Paris Descartes, Service Hospitalo Universitaire, Centre Hospitalier Sainte-Anne, Paris, France
| | | | - P Marques
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal,ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | | | - C Poupon
- Neurospin, I2BM, CEA, Gif/Yvette, France
| | - B Djemaï
- Neurospin, I2BM, CEA, Gif/Yvette, France
| | | | - S Mériaux
- Neurospin, I2BM, CEA, Gif/Yvette, France
| | - N Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal,ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - T M Jay
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France,Université Paris Descartes, Sorbonne Paris Cité, Paris, France,Faculté de Médecine Paris Descartes, Service Hospitalo Universitaire, Centre Hospitalier Sainte-Anne, Paris, France
| | - A Cachia
- Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, Paris, France,Université Paris Descartes, Sorbonne Paris Cité, Paris, France,Laboratoire de Psychologie du développement et de l’Education de l’Enfant, CNRS UMR 8240, Paris, France,Institut Universitaire de France, Paris, France,Centre de Psychiatrie et Neurosciences, INSERM UMR_S 894, 2 ter rue d’Alésia, Paris 75014, France. E-mail:
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5
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Boucher M, Geffroy F, Prévéral S, Bellanger L, Selingue E, Adryanczyk-Perrier G, Péan M, Lefèvre CT, Pignol D, Ginet N, Mériaux S. Genetically tailored magnetosomes used as MRI probe for molecular imaging of brain tumor. Biomaterials 2016; 121:167-178. [PMID: 28088078 DOI: 10.1016/j.biomaterials.2016.12.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/12/2016] [Accepted: 12/16/2016] [Indexed: 12/20/2022]
Abstract
We investigate here the potential of single step production of genetically engineered magnetosomes, bacterial biogenic iron-oxide nanoparticles embedded in a lipid vesicle, as a new tailorable magnetic resonance molecular imaging probe. We demonstrate in vitro the specific binding and the significant internalization into U87 cells of magnetosomes decorated with RGD peptide. After injection at the tail vein of glioblastoma-bearing mice, we evidence in the first 2 h the rapid accumulation of both unlabeled and functionalized magnetosomes inside the tumor by Enhanced Permeability and Retention effects. 24 h after the injection, a specific enhancement of the tumor contrast is observed on MR images only for RGD-labeled magnetosomes. Post mortem acquisition of histological data confirms MRI results with more magnetosomes found into the tumor treated with functionalized magnetosomes. This work establishes the first proof-of-concept of a successful bio-integrated production of molecular imaging probe for MRI.
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Affiliation(s)
- M Boucher
- UNIRS, CEA/DRF/I(2)BM/NeuroSpin, CEA Saclay, Gif-sur-Yvette, France
| | - F Geffroy
- UNIRS, CEA/DRF/I(2)BM/NeuroSpin, CEA Saclay, Gif-sur-Yvette, France
| | - S Prévéral
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France
| | - L Bellanger
- LI2D, CEA/DRF/IBITEC-S/SPI, CEA Marcoule, Bagnols-sur-Cèze, France
| | - E Selingue
- UNIRS, CEA/DRF/I(2)BM/NeuroSpin, CEA Saclay, Gif-sur-Yvette, France
| | - G Adryanczyk-Perrier
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France
| | - M Péan
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France
| | - C T Lefèvre
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France
| | - D Pignol
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France
| | - N Ginet
- LBC, CEA/DRF/BIAM, CEA Cadarache, Saint-Paul-lez-Durance, France; UMR 7265, Centre National de Recherche Scientifique, Saint-Paul-lez-Durance, France; Aix Marseille Université, Saint-Paul-lez-Durance, France; Aix Marseille Université, CNRS, Laboratoire de Chimie Bactérienne, Marseille, France
| | - S Mériaux
- UNIRS, CEA/DRF/I(2)BM/NeuroSpin, CEA Saclay, Gif-sur-Yvette, France.
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6
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von Grabowiecki Y, Abreu P, Blanchard O, Palamiuc L, Benosman S, Mériaux S, Devignot V, Gross I, Mellitzer G, Gonzalez de Aguilar JL, Gaiddon C. Transcriptional activator TAp63 is upregulated in muscular atrophy during ALS and induces the pro-atrophic ubiquitin ligase Trim63. eLife 2016; 5. [PMID: 26919175 PMCID: PMC4786414 DOI: 10.7554/elife.10528] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 01/08/2016] [Indexed: 12/14/2022] Open
Abstract
Mechanisms of muscle atrophy are complex and their understanding might help finding therapeutic solutions for pathologies such as amyotrophic lateral sclerosis (ALS). We meta-analyzed transcriptomic experiments of muscles of ALS patients and mouse models, uncovering a p53 deregulation as common denominator. We then characterized the induction of several p53 family members (p53, p63, p73) and a correlation between the levels of p53 family target genes and the severity of muscle atrophy in ALS patients and mice. In particular, we observed increased p63 protein levels in the fibers of atrophic muscles via denervation-dependent and -independent mechanisms. At a functional level, we demonstrated that TAp63 and p53 transactivate the promoter and increased the expression of Trim63 (MuRF1), an effector of muscle atrophy. Altogether, these results suggest a novel function for p63 as a contributor to muscular atrophic processes via the regulation of multiple genes, including the muscle atrophy gene Trim63.
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Affiliation(s)
- Yannick von Grabowiecki
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - Paula Abreu
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - Orphee Blanchard
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - Lavinia Palamiuc
- Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France.,Sanford Burnham Medical Research Institute, San Diego, United States
| | - Samir Benosman
- Sanford Burnham Medical Research Institute, San Diego, United States
| | - Sophie Mériaux
- Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France.,Sanford Burnham Medical Research Institute, San Diego, United States
| | - Véronique Devignot
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - Isabelle Gross
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - Georg Mellitzer
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
| | - José L Gonzalez de Aguilar
- Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France.,Institut national de la santé et de la recherche médicale, Laboratoire SMN, Strasbourg, France
| | - Christian Gaiddon
- UMR_S 1113, Molecular mechanisms of stress response and pathologies, Institut national de la santé et de la recherche médicale, Strasbourg, France.,Fédération de Recherche Translationnelle, Strasbourg University, Strasbourg, France
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7
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Bourgin J, Cachia A, Boumezbeur F, Djemaï B, Bottlaender M, Duchesnay E, Mériaux S, Jay TM. Hyper-responsivity to stress in rats is associated with a large increase in amygdala volume. A 7T MRI study. Eur Neuropsychopharmacol 2015; 25:828-35. [PMID: 25823695 DOI: 10.1016/j.euroneuro.2015.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 02/11/2015] [Accepted: 02/25/2015] [Indexed: 12/25/2022]
Abstract
Stress is known to precipitate psychiatric disorders in vulnerable people. Individual differences in the stress responsivity can dramatically affect the onset of these illnesses. Animal models of repeated stress represent valuable tools to identify region-specific volumetric changes in the brain. Here, using high resolution 7T MRI, we found that amygdala is the most significant parameter for distinction between F344 and SD rats known to have differential response to stress. A significant substantial increase (45%) was found in the amygdala volume of rats that do not habituate to the repeated stress procedure (F344 rats) compared to SD rats. This strain-specific effect of stress was evidenced by a significant strain-by-stress interaction. There were no significant strain differences in the volumes of hippocampi and prefrontal cortices though stress produces significant reductions of smaller amplitude in the medial prefrontal cortex (mPFC) (9% and 12%) and dorsal hippocampus (5% and 6%) in both strains. Our data further demonstrate the feasibility and relevance of high isotropic resolution structural ex vivo 7T MRI in the study of the brain effects of stress in small animals. Neuroimaging is a valuable tool to follow up brain volumetric reorganization during the stress response and could also be easily used to test pharmacological interventions to prevent the deleterious effects of stress.
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Affiliation(s)
- J Bourgin
- Laboratoire de Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, 75014 Paris, France; Centre hospitalier Sainte-Anne, Service Hospitalo-Universitaire, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - A Cachia
- Laboratoire de Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, 75014 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France; CNRS UMR 8240, Laboratoire de Psychologie du développement et de l׳Education de l׳Enfant, Paris, France
| | - F Boumezbeur
- UNIRS, NeuroSpin, DSV/Institut d׳imagerie Biomédicale, CEA, Gif-sur-Yvette, France
| | - B Djemaï
- UNIACT, NeuroSpin, DSV/Institut d׳imagerie Biomédicale, CEA, Gif-sur-Yvette, France
| | - M Bottlaender
- UNIACT, NeuroSpin, DSV/Institut d׳imagerie Biomédicale, CEA, Gif-sur-Yvette, France
| | - E Duchesnay
- UNATI, NeuroSpin, DSV/Institut d׳imagerie Biomédicale, CEA, Gif-sur-Yvette, France
| | - S Mériaux
- UNIRS, NeuroSpin, DSV/Institut d׳imagerie Biomédicale, CEA, Gif-sur-Yvette, France
| | - T M Jay
- Laboratoire de Physiopathologie des Maladies Psychiatriques, UMR_S 894 Inserm, Centre de Psychiatrie et Neurosciences, 75014 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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8
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Richard S, Boucher M, Herbet A, Lalatonne Y, Mériaux S, Boquet D, Motte L. Endothelin B receptors targeted by iron oxide nanoparticles functionalized with a specific antibody: toward immunoimaging of brain tumors. J Mater Chem B 2015; 3:2939-2942. [DOI: 10.1039/c5tb00103j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vasculature enhancement is observed in mouse brain after intravenous injection of iron oxide nanoparticles functionalized with antibody targeting endothelin B receptors over-expressed in glioma.
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Affiliation(s)
- S. Richard
- Université Paris 13
- Sorbonne Paris Cité
- CSPBAT
- UMR CNRS 7244
- 93017 Bobigny
| | - M. Boucher
- CEA
- DSV
- I2BM
- NeuroSpin
- Unité d'imagerie par IRM et de Spectroscopie (UNIRS)
| | - A. Herbet
- CEA
- DSV
- iBiTec-S
- SPI
- Laboratoire d'Etude du Métabolisme des Médicaments (LEMM)
| | - Y. Lalatonne
- Université Paris 13
- Sorbonne Paris Cité
- CSPBAT
- UMR CNRS 7244
- 93017 Bobigny
| | - S. Mériaux
- CEA
- DSV
- I2BM
- NeuroSpin
- Unité d'imagerie par IRM et de Spectroscopie (UNIRS)
| | - D. Boquet
- CEA
- DSV
- iBiTec-S
- SPI
- Laboratoire d'Etude du Métabolisme des Médicaments (LEMM)
| | - L. Motte
- Université Paris 13
- Sorbonne Paris Cité
- CSPBAT
- UMR CNRS 7244
- 93017 Bobigny
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9
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Marty B, Djemaï B, Robic C, Port M, Robert P, Valette J, Boumezbeur F, Le Bihan D, Lethimonnier F, Mériaux S. Hindered diffusion of MRI contrast agents in rat brain extracellular micro-environment assessed by acquisition of dynamic T1 and T2 maps. Contrast Media Mol Imaging 2013; 8:12-9. [PMID: 23109388 DOI: 10.1002/cmmi.1489] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The knowledge of brain tissues characteristics (such as extracellular space and tortuosity) represents valuable information for the design of optimal MR probes for specific biomarkers targeting. This work proposes a methodology based on dynamic acquisition of relaxation time maps to quantify in vivo MRI contrast agent concentration after intra-cerebral injection in rat brain. It was applied to estimate the hindered diffusion in brain tissues of five contrast agents with different hydrodynamic diameters (Dotarem(®) ≈ 1 nm, P846 ≈ 4 nm, P792 ≈ 7 nm, P904 ≈ 22 nm and Gd-based emulsion ≈ 170 nm). In vivo apparent diffusion coefficients were compared with those estimated in an obstacle-free medium to determine brain extracellular space and tortuosity. At a 2 h imaging timescale, all contrast agents except the Gd-based emulsion exhibited significant diffusion through brain tissues, with characteristic times compatible with MR molecular imaging (<70 min to diffuse between two capillaries). In conclusion, our experiments indicate that MRI contrast agents with sizes up to 22 nm can be used to perform molecular imaging on intra-cerebral biomarkers. Our quantification methodology allows a precise estimation of apparent diffusion coefficients, which is helpful to calibrate optimal timing between contrast agent injection and MRI observation for molecular imaging studies.
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Affiliation(s)
- B Marty
- NeuroSpin, I2BM, Commissariat à l'Énergie Atomique, Gif-sur-Yvette, France
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10
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Fréchou M, Beray-Berthat V, Raynaud JS, Mériaux S, Gombert F, Lancelot E, Plotkine M, Marchand-Leroux C, Ballet S, Robert P, Louin G, Margaill I. Detection of vascular cell adhesion molecule-1 expression with USPIO-enhanced molecular MRI in a mouse model of cerebral ischemia. Contrast Media Mol Imaging 2012; 8:157-64. [DOI: 10.1002/cmmi.1512] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 09/07/2012] [Accepted: 09/19/2012] [Indexed: 11/06/2022]
Affiliation(s)
| | - V. Beray-Berthat
- Equipe de recherche ‘Pharmacologie de la Circulation Cérébrale’ EA 4475; Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques; 75006; Paris; France
| | - J.-S. Raynaud
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - S. Mériaux
- NeuroSpin, Centre CEA; 91191; Gif-sur-Yvette; France
| | - F. Gombert
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - E. Lancelot
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - M. Plotkine
- Equipe de recherche ‘Pharmacologie de la Circulation Cérébrale’ EA 4475; Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques; 75006; Paris; France
| | - C. Marchand-Leroux
- Equipe de recherche ‘Pharmacologie de la Circulation Cérébrale’ EA 4475; Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques; 75006; Paris; France
| | - S. Ballet
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - P. Robert
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - G. Louin
- Guerbet, Division Recherche - Service Imagerie Expérimentale; 95943; Roissy; CDG; France
| | - I. Margaill
- Equipe de recherche ‘Pharmacologie de la Circulation Cérébrale’ EA 4475; Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques; 75006; Paris; France
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11
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Abstract
The p53 tumor suppressor pathway is central both in reducing cancer frequency in vertebrates and in mediating the response of commonly used cancer therapies. This article aims to summarize and discuss a large body of evidence suggesting that the p53 pathway harbors functional inherited single-nucleotide polymorphisms (SNPs) that affect p53 signaling in cells, resulting in differences in cancer risk and clinical outcome in humans. The insights gained through these studies into how the functional p53 pathway SNPs could help in the tailoring of cancer therapies to the individual are discussed. Moreover, recent work is discussed that suggests that many more functional p53 pathway SNPs are yet to be fully characterized and that a thorough analysis of the functional human genetics of this important tumor suppressor pathway is required.
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Affiliation(s)
- Lukasz F Grochola
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, OX3 7DQ, United Kingdom
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